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A kind of hexaconia japonica leaf polysaccharide and its extraction method

An extraction method and a technology of Cordyceps sinensis, which are applied in the field of polysaccharides of Corydalis chinensis and its extraction, can solve the problems of severe acid-base extraction conditions, high industrial costs, complicated procedures, etc. high biological activity

Active Publication Date: 2019-07-23
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the commonly used extraction methods for polysaccharides are acid hydrolysis and lye extraction. However, the acid-base extraction conditions are relatively severe, the procedure is relatively complicated, and the industrial cost is high. The acid-alkaline solution after the reaction will become a new source of pollution.

Method used

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  • A kind of hexaconia japonica leaf polysaccharide and its extraction method
  • A kind of hexaconia japonica leaf polysaccharide and its extraction method
  • A kind of hexaconia japonica leaf polysaccharide and its extraction method

Examples

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Embodiment 1

[0037] A method for extracting and separating short branches of Hexaphyllum leaves, comprising the following steps in turn:

[0038] (1) Accurately weigh 40 g of dried and crushed short-branched Hexaphyllum leaves, add 2000 mL of deionized water, reflux and extract twice in a water bath at 70°C, each time for 3 hours, filter while hot, and collect the filtrate;

[0039] (2) The filtrate is concentrated under reduced pressure in a rotary evaporator at 60°C until the volume is reduced to one tenth of its original volume;

[0040] (3) The concentrate was centrifuged at 3000r / min for 5min to remove solid residues and collect the supernatant;

[0041] (4) Take the supernatant, add 3 times the volume of absolute ethanol, let it stand overnight at 4°C to allow it to precipitate naturally, centrifuge at 3000r / min for 5min to collect the precipitate, and evaporate the precipitate to dry up the ethanol to obtain the short branch six Leaf polysaccharide;

[0042] The final result of th...

Embodiment 2

[0047] A method for extracting and separating short branches of Hexaphyllum leaves, comprising the following steps in turn:

[0048] (1) Accurately weigh 40 g of dry and crushed short-branched Hexagram leaves, add 2400 mL of deionized water, and extract twice under reflux in a water bath at 80°C, each time for 3 hours, filter while hot, and collect the filtrate;

[0049] (2) The filtrate is concentrated under reduced pressure in a rotary evaporator at 60°C until the volume is reduced to one tenth of its original volume;

[0050] (3) The concentrate was centrifuged at 3000r / min for 5min to remove solid residues and collect the supernatant;

[0051] (4) Take the supernatant, add 3 times the volume of absolute ethanol, let it stand overnight at 4°C to allow it to precipitate naturally, centrifuge at 3000r / min for 5min to collect the precipitate, and evaporate the precipitate to dry up the ethanol to obtain the short branch six Leaf polysaccharide;

[0052] The final result of t...

Embodiment 3

[0054] Change the reflux temperature to 60°C, 70°C, 90°C and 100°C respectively, and the other conditions are the same as in Example 2. figure 1 shown. Depend on figure 1 It can be seen that with the increase of temperature, the polysaccharide yield of Hexaphyllum brachyphyllum first increased and then decreased, and the yield was the highest at 80°C.

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Abstract

The invention relates to abelia engleriana polysaccharides and an extraction method thereof and belongs to the field of extraction of polysaccharides. Research in extraction of the abelia engleriana polysaccharides is not available currently. Extraction and separation of the abelia engleriana polysaccharides mainly comprise the following steps: extraction with hot water is performed, an extracting solution is obtained after filtering and subjected to reduced-pressure concentration, absolute ethyl alcohol is added to a concentrated solution, the solution is left to stay overnight for precipitation, a precipitate is centrifugally collected and dried, and the abelia engleriana polysaccharides are obtained. According to the extraction method, the extraction time is short, organic reagent pollution is avoided, the method is safe, reliable and low in cost, and engineering enlargement and continuous operation are easy; the extraction conditions are mild, the yield is high, and the prepared abelia engleriana polysaccharides have higher DPPH free radical scavenging capacity and good oxidation resistance.

Description

[0001] 【Technical field】 [0002] The invention belongs to the field of polysaccharide extraction, and in particular relates to a Hexaconia brevifolia polysaccharide and an extraction method thereof. [0003] 【Background technique】 [0004] Short-branched hexagram is a deciduous shrub of the genus Ablia in the family Caprifoliaceae, and its leaves are also called fairy grass leaves. Naturally distributed in Shaanxi, Sichuan, Hubei and other regions, it is a unique Chinese herbal medicine resource in China. Shaanxi and other places call its leaves jelly leaves, and there is a habit of making jelly from it, commonly known as "immortal tofu", which has a smooth and refreshing taste and has been eaten for thousands of years. Studies have shown that pectin is the most important water-soluble dietary fiber in Hesperia spp., and contains other polysaccharide compounds. As a biological macromolecule, polysaccharide has the functions of immune regulation, anti-infection, anti-radiatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00A61P39/06
CPCC08B37/00C08B37/0003
Inventor 郭增军石硕薛璇玑张新新仙靓孙丽娜
Owner XI AN JIAOTONG UNIV
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